Shelving unit



FIG. 1 is a perspective view of a shelving unit showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a left side elevational view thereof, the opposing right sideelevational view being substantially the same thereof;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom plan view thereof.

The ornamental design for a shelving unit, as shown and described.